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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 101 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.19.96 × 100 =
  2. 2.419.1 × 1000 =
  3. 3.474.8 ÷ 10 =
  4. 4.345.8 × 10 =
  5. 5.29.87 ÷ 10 =
  6. 6.125.4 × 1000 =
  7. 7.211.2 × 1000 =
  8. 8.111.5 × 1000 =
  9. 9.5.29 × 10 =
  10. 10.21.94 ÷ 100 =
  11. 11.3.04 ÷ 10 =
  12. 12.85.2 × 1000 =
  13. 13.2.73 × 10 =
  14. 14.48.93 × 100 =
  15. 15.137.3 ÷ 100 =
  16. 16.477.6 ÷ 1000 =
  17. 17.36.49 × 100 =
  18. 18.142.8 × 10 =
  19. 19.398.3 × 10 =
  20. 20.28.51 × 10 =
  21. 21.6.61 ÷ 100 =
  22. 22.8.96 × 1000 =
  23. 23.313.8 × 100 =
  24. 24.337.5 × 1000 =
  25. 25.0.81 × 100 =
  26. 26.21.91 ÷ 100 =
  27. 27.270.1 ÷ 1000 =
  28. 28.375.7 ÷ 10 =
  29. 29.33.76 ÷ 10 =
  30. 30.418.7 ÷ 10 =
  31. 31.481.1 ÷ 100 =
  32. 32.352.6 × 10 =
  33. 33.488.7 × 100 =
  34. 34.431.7 ÷ 10 =
  35. 35.19.12 ÷ 1000 =
  36. 36.380.8 × 10 =
  37. 37.3.78 × 10 =
  38. 38.307.4 × 1000 =
  39. 39.40.4 ÷ 100 =
  40. 40.69.3 × 100 =

Answer key

  1. 1996
  2. 419100
  3. 47.48
  4. 3458
  5. 2.987
  6. 125400
  7. 211200
  8. 111500
  9. 52.9
  10. 0.2194
  11. 0.304
  12. 85200
  13. 27.3
  14. 4893
  15. 1.373
  16. 0.4776
  17. 3649
  18. 1428
  19. 3983
  20. 285.1
  21. 0.0661
  22. 8960
  23. 31380
  24. 337500
  25. 81
  26. 0.2191
  27. 0.2701
  28. 37.57
  29. 3.376
  30. 41.87
  31. 4.811
  32. 3526
  33. 48870
  34. 43.17
  35. 0.01912
  36. 3808
  37. 37.8
  38. 307400
  39. 0.404
  40. 6930

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